119 lines
2.5 KiB
JavaScript
119 lines
2.5 KiB
JavaScript
/* global Chart */
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'use strict';
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window.chartColors = {
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red: 'rgb(255, 99, 132)',
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orange: 'rgb(255, 159, 64)',
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yellow: 'rgb(255, 205, 86)',
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green: 'rgb(75, 192, 192)',
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blue: 'rgb(54, 162, 235)',
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purple: 'rgb(153, 102, 255)',
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grey: 'rgb(201, 203, 207)'
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};
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window.randomScalingFactor = function() {
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return (Math.random() > 0.5 ? 1.0 : -1.0) * Math.round(Math.random() * 100);
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};
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(function(global) {
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var Months = [
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'January',
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'February',
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'March',
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'April',
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'May',
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'June',
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'July',
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'August',
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'September',
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'October',
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'November',
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'December'
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];
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var Samples = global.Samples || (global.Samples = {});
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Samples.utils = {
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// Adapted from http://indiegamr.com/generate-repeatable-random-numbers-in-js/
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srand: function(seed) {
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this._seed = seed;
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},
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rand: function(min, max) {
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var seed = this._seed;
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min = min === undefined? 0 : min;
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max = max === undefined? 1 : max;
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this._seed = (seed * 9301 + 49297) % 233280;
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return min + (this._seed / 233280) * (max - min);
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},
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numbers: function(config) {
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var cfg = config || {};
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var min = cfg.min || 0;
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var max = cfg.max || 1;
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var from = cfg.from || [];
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var count = cfg.count || 8;
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var decimals = cfg.decimals || 8;
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var continuity = cfg.continuity || 1;
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var dfactor = Math.pow(10, decimals) || 0;
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var data = [];
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var i, value;
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for (i=0; i<count; ++i) {
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value = (from[i] || 0) + this.rand(min, max);
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if (this.rand() <= continuity) {
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data.push(Math.round(dfactor * value) / dfactor);
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} else {
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data.push(null);
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}
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}
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return data;
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},
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labels: function(config) {
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var cfg = config || {};
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var min = cfg.min || 0;
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var max = cfg.max || 100;
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var count = cfg.count || 8;
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var step = (max-min) / count;
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var decimals = cfg.decimals || 8;
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var dfactor = Math.pow(10, decimals) || 0;
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var prefix = cfg.prefix || '';
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var values = [];
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var i;
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for (i=min; i<max; i+=step) {
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values.push(prefix + Math.round(dfactor * i) / dfactor);
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}
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return values;
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},
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months: function(config) {
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var cfg = config || {};
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var count = cfg.count || 12;
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var section = cfg.section;
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var values = [];
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var i, value;
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for (i=0; i<count; ++i) {
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value = Months[Math.ceil(i)%12];
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values.push(value.substring(0, section));
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}
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return values;
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},
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transparentize: function(color, opacity) {
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var alpha = opacity === undefined? 0.5 : 1 - opacity;
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return Chart.helpers.color(color).alpha(alpha).rgbString();
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},
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merge: Chart.helpers.configMerge
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};
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Samples.utils.srand(Date.now());
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}(this));
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